Oil-burner.



R. HOFFMAN.

0H. BURNER. APPLICATION man Nov. 2|. 1911.

memedl Jan. 22, 1918..

0 O 0 O O 0 0 0 0 j ooooo o 2 3 o o 0 0 d o RUDOLPH HOFFMAN, OFKANKAKEE, ILLINOIS, ASSIGNOR TO SEARS, ROEBUOK AND COMPANY, OF CHICAGO,ILLINOIS, A CORPORATION OF NEW YORK.

OIL-BURNER.

To all whom it may concern:

Be it known that I, RUDOLPH HOFFMAN, a citizen of the United States,residing at Kankakee, in the county of Kankakee and tate of Illinois,have invented certain new and useful Improvements in OiLBurners, ofwhich the following is a specification.

This invention relates to oil burners provided with tubular wicks, andparticularly, although not exclusively, to burners used in the type ofstove known. as oil heaters.

The invention has special reference to an air distributer or flamespreader for such a burner, the distributer being provided with anannular flange by means of which the distributer is supported upon thewick. In order that there shall not be excessive vaporization of oil atthe inner surface of the wick at the upper edge thereof, it is necessarythat the wick flange and adjacent parts shall not become excessivelyheated; and it is the object of the invention to prevent such excessiveheating.

In the accompanying drawings, Figure 1. is a lower side view of an airdistributer embodying the features of my invention. Fig. 2 is atransverse vertical sectional view taken in the plane of dotted line 22of Fig. 1.

In the drawings, A denotes the air distributer and B the tubular wick.The distributer comprises a vertically extending sleeve 1, an annularoutwardly extending imperforate flange 2 at the upper end of the sleevean annular perforated flange 3 extending vertically from the outer edgeof the flange 2, and cap or spreader plate t attached to the upper edgeof the flange 3. The parts 1, 2 and 3 may, if desired, be formed from anintegral piece of sheet metal. The cap 4 is imperforate save that it isprovided with a central opening 5 to receive a rod (not shown) carryingthe usual stop to limit upward movement of the air distributer and henceof the wick.

Secured to and encircling; the lower portion of the sleeve 1 is a sleeve6 having an outwardly flaring annular flange 7. A wick flange 8 extendshorizontally from the upper edge of the flange 7. The parts 6, 7 and 8may, if desired, be made from an integral piece of sheet metal. 9 is afrusto-conical or Specification of Letters Patent.

Patented Jan, Q2, fflllfl.

Serial No. 203,144.

' the ring 9 whereby to hold the ring between the wick flange 8 and thebead 10. The sleeve 1 is perforated all the way around,circumferentially of the sleeve, from a point adjacent to the lowerportion of the flange 7 to the upper end of the sleeve. The flanges 7and 9 are similarly perforated, although preferably the perforations inthe flange 7 are larger per unit of surface than the perforations in thesleeve 1. Preferably the perforations in the ring 9 are smaller per unitof surface than those in the sleeve 1. The sleeve 1, the flange 7 andthe ring 9 define or inclose an annular mixing chamber extending aroundthe sleeve 1 and communicating with the vapor-generating space betweenthe inner surface of the wick B and the distributor, and communicatingalso with the interior of the sleeve 1 and the space directly above thewick flange 8. A portion of the air current passing upwardly through theair distributor enters the mixing chamber and passes out through thering 9, thus serving to keep the wick flange 8 cool, preventingoverheating of the flanges 7 and 8, and hence preventing excessivevaporization of the oil.

I claim as my invention:

An air distributor for an oil burner having, in combination, a verticalsleeve, an upwardly flaring annular flange surrounding and secured tothe sleeve, an outwardly extending annular wick flange connected to theupper portion of the upwardly flaring flange, and a frusto-conicalupwardly tapering ring extending from the inner portion of the wickflange to the sleeve, said sleeve, upwardly flaring flange and upwardlytapering ring being perforated and providing an annular mixin chamberarranged to discharge the mixture directly above the wick flange.

In testimony whereof, I have hereunto set my hand.

RUDOLPH HOFFMAN.

Copies of this patent may be obtained for nve cents each, by addressingthe Commissioner of Patents,

' Washington, D. G.

